Answers

Add 28/90 and 63/20

1^st number: 28/90, 2^nd number: 3 3/20

28/90 + 63/20 is 623/180.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 20 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 90 × 2 = 180,
   28/90 = 28 × 2/90 × 2 = 56/180
3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
   63/20 = 63 × 9/20 × 9 = 567/180
4. Add the two like fractions:
   56/180 + 567/180 = 56 + 567/180 = 623/180
5. So, 28/90 + 63/20 = 623/180
   In mixed form: 383/180

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